- 1 year ago 100
Python Question

Slice all strings in a list?

Is there a Pythonic way to slice all strings in a list?

Suppose I have a list of strings:

list = ['foo', 'bar', 'baz']

And I want just the last 2 characters from each string:

list2 == ['oo', 'ar', 'az']

How can I get that?

I know I can iterate thru the list and take list[i][-2:] from each one, but that doesn't seem very Pythonic.

Less generally, my code is:

def parseIt(filename):
with open(filename) as f:
lines = f.readlines()

result = [i.split(',') for i in lines[]]

...except I only want to split lines[i][20:] from each line (not the whole line).

Answer Source

You mentioned that you can do list[i][-2:] for transforming the list per your specification, but what you are actually looking for is:

[word[1:] for word in lst]

Furthermore, for the code sample you provided where you are looking to seem to slice 20 characters from the beginning, the solution is the same:

result = [i[20:].split(',') for i in lines]
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